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JP2009167950A |
To provide a DPF regenerative device capable of materializing the regeneration of DPF by a device requiring comparatively low cost and having excellent DPF regenerative performance.The regenerative device of the black smoke removing devi...
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JP4304527B2 |
The system has a particulate filter (17) placed in an exhaust pipe (14) to trap particulate matter evacuated from an internal combustion engine (10). An exhaust butterfly valve (18) placed downstream of the filter regulates superficial s...
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JP4304789B2 |
To inhibit worsening of exhaust emission at the start of an internal combustion engine by providing technology for stably burning combustible mixture supplied from the internal combustion engine at the upstream side of an exhaust emissio...
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JP4301070B2 |
An exhaust cleaning device of an internal combustion engine includes a particulate filter disposed in an exhaust duct of the internal combustion engine. A regeneration control increases the temperature of the particulate filter to approx...
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JP2009156068A |
To provide an exhaust emission control device for an internal combustion engine for preventing the leakage of additive flowing along the wall face of a passage, from between a seat portion and an exhaust pipe to the outside.The exhaust e...
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JP4291650B2 |
Emission control means of an exhaust purifying apparatus supplies fuel to exhaust gas through an exhaust passage, thereby setting the temperature of a catalyst to a temperature at which sulfur oxides occluded by the catalyst can be emitt...
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JP4290032B2 |
An NOx reducing catalyst for reducing/purifying NOx using a reducing agent is installed on an engine exhaust pipe, and solenoid on/off valves for opening/closing an exhaust flow path and oxidizing catalysts mutually different in oxidizin...
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JP4288985B2 |
An exhaust gas cleaning system of a diesel engine includes a diesel particulate filter (a DPF) disposed in an exhaust passage, and a diesel oxidation catalyst (a DOC) disposed upstream of the DPF. When an electronic control unit (an ECU)...
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JP4285080B2 |
An electronic control unit (51) starts regeneration processing of a particulate filter (4) and reserves the starting of the regeneration processing when the output torque of an internal combustion engine is more than a predetermined thre...
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JP4284087B2 |
An exhaust gas purifying apparatus and method for an internal combustion engine, and an engine control unit are provided for appropriately determining the amount of reducing agent supplied to a NOx selective reduction catalyst to ensure ...
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JP4277571B2 |
To improve further a collecting filter regeneration processing technology for burning and eliminating particulates collected by a collecting filter in an engine exhaust emission control device. There is provided the engine exhaust emissi...
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JP2009521641A |
Method and system of onboard diagnostics in engine emissions monitoring, particularly for detecting anomalous cylinder behavior. In some embodiments, at least one sensor in the exhaust path measures electric charge that is indicative of ...
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JP4273306B2 |
To provide an abnormality determining device for an NOx sensor capable of reliably determining an abnormality of the NOx sensor so as to effect the proper regeneration of an NOx occluded catalyst. The abnormality determining device for t...
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JP4273911B2 |
To provide an exhaust emission control device for a vehicle preventing occurrence of filter damage due to over accumulation of PM under any operation conditions. When PM accumulation value increases and it gets into a first state where P...
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JP4269407B2 |
In an internal combustion engine with a combustion heater for elevating a temperature of an engine related element, an object of the present invention is to provide a technique that may effectively performs temperature elevation of an ex...
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JP4267414B2 |
A dynamic catalyst bed temperature Td is computed by taking the thermal capacity of an exhaust system (36,38,40) into consideration. Therefore, even when the operating condition of an engine (2) is in transition, it is possible to obtain...
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JP4269927B2 |
In the case where an operating state of an internal combustion engine (1) belongs to a filter forced recovery region, filter forced recovery is performed (S106) when an amount of particulate matter deposited in a filter (20) becomes equa...
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JP4263642B2 |
To eliminate sulfur oxides poisoning in a nitrogen oxide catalyst, the process is stopped when the temperature in the catalyst becomes less than or equal to a primary value predetermined in the course of elimination. The control executes...
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JP2009092076A |
To provide an exhaust emission control device of a diesel engine for excellently purifying exhaust gas exhausted from the diesel engine over a long period by minimizing the deterioration in fuel economy.A NOx adsorption-reduction type ca...
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JP4254630B2 |
A bypass passage is provided, which connects a portion upstream of a turbine of a supercharger in an exhaust passage to a portion close to a front end surface of exhaust gas purification in the exhaust passage, and through which at least...
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JP2009074453A |
To provide an exhaust emission control system of an internal combustion engine in which the clogging of a reducer-adding valve is suitably suppressed even if the pulsation of exhaust gas occurs intermittently.This exhaust emission contro...
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JP4248427B2 |
A regeneration controller that prevents overheating when performing burn-up heating for completely burning particulate matter by intermittent fuel addition to an exhaust system or intermittent increase of fuel addition to the exhaust sys...
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JP4244652B2 |
An engine exhaust emission control device determines a differential pressure across a diesel particulate filter (DPF) to enable regeneration of the DPF at optimal timing. An ECU estimates the temperature of a differential pressure sensor...
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JP4241953B2 |
In a diagnostic method and apparatus for a vehicle, a transponder for performing a communication with an external receiver and an engine ECU are connected on a communication line. During a first inappropriate period in which noises are s...
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JP4241465B2 |
An electronic control unit (6) of a diesel engine controls an operating state of the engine to a first operating state, in which particulate matters are easily generated, when inspection of a particulate filter regeneration system is per...
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JP4239765B2 |
In the state where an air-fuel ratio AF is equal to or lower than a reference air-fuel ratio AFr (AF ≤ AFr) ("YES" in step S204), when at least one of the condition that an upstream side exhaust gas temperature Texin of an exhaust gas ...
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JP4241032B2 |
A NOx catalyst (10) traps nitrogen oxides in the exhaust gas of a diesel engine (40), and particulate matter is trapped by a filter (20). The sulfur poisoning of the NOx catalyst (10) is eliminated using exhaust gas corresponding to a ri...
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JP4235069B2 |
An apparatus for controlling an exhaust purifying catalyst has a high sulfur switch (84) that is switched between an on state and an off state by an occupant such as a driver according to the sulfur concentration level of the fuel used. ...
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JP2009041370A |
To provide an exhaust emission control device of an internal combustion engine in which the possibility of thermal damage of an injector is lowered and a reducer injected from the injector is mixed and dispersed in exhaust gas.This exhau...
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JP4231303B2 |
To provide an exhaust pipe capable of avoiding damage to a sensor element by preventing water generated by the moisture condensation in exhaust gas from contacting with the sensor and preventing a drop in detection accuracy by the sensor...
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JP2009507175A |
invention relates to a method for operating an internal combustion engine, in the exhaust gas section of which is arranged at least one SCR catalytic converter, which is hit with a reagent that contributes to NOx conversion in the SCR ca...
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JP4226007B2 |
The present invention relates to an exhaust emission control apparatus for an internal combustion engine and a process for operating it. The exhaust emission control has a particulate filter for filtering particulate matter from the exha...
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JP4225018B2 |
To provide an exhaust emission control device which is high in the degree of freedom with respect to discharge from a collecting container of exhaust gas. The exhaust emission control device 10 is provided with the collecting container 1...
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JP4221592B2 |
To save fuel consumption as much as possible when forced regeneration processing of a particulate filter is performed by a dealer or the like. Particulate accumulation amount of a particulate filter 4 is estimated before start of regener...
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JP4218556B2 |
A regeneration controller for an exhaust purification apparatus (36, 38) of an engine (2) that appropriately burns particulate matter accumulated in the exhaust purification apparatus. The regeneration controller includes an ECU (70) tha...
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JP4217479B2 |
A method and a device for controlling an exhaust gas aftertreatment system, in which a first state variable characterizes the state of the exhaust gas aftertreatment system. A second state variable takes into consideration additional inf...
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JP4210555B2 |
To provide an exhaust emission control device capable of suitably burning and removing soot or SOF adhering and accumulating on an electrode of a plasma generating device. The exhaust emission control device equipped with an after-treatm...
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JP4211611B2 |
An exhaust purifying member (31) is located in an exhaust passage (26) of an internal combustion engine (1). A temperature sensor (33) detects the temperature of exhaust gas at an exit of the exhaust purifying member. A diagnosis means d...
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JP4204519B2 |
A regulatory system for exhaust gases from an internal combustion engine in which fuel is supplied to a purification mechanism (44R, 44L) within an exhaust pipe (40R, 42R ; 40L, 42L) to restore the functionality of the purification syste...
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JP4204647B2 |
A safe, reliable SCR system for reducing NOx emissions from a lean-burn internal combustion engine utilizes urea in aqueous solution. Overheating and hydrolysis of the solution are prevented by maintaining the temperature of the urea sol...
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JP4196593B2 |
To provide an exhaust emission purifying device for an internal combustion engine which alleviates the consumption of a reducing component necessary to function a filter provided in an exhaust passage for collecting fine particles in exh...
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JP4186259B2 |
To accurately detect the deterioration of a lean NOx catalyst by providing an estimation means which estimates the NOx storing capacity of the lean NOx catalyst based on the size of the output value of an oxygen concentration sensor in r...
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JP4182878B2 |
An air fuel ratio control apparatus for an internal combustion engine can improve learning accuracy in the air fuel ratio control even if the air fuel ratio of a mixture detected by an air fuel ratio detection device shifts from an actua...
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JP4178960B2 |
An exhaust gas purification system of an internal combustion engine supplies hydrocarbon by performing a post injection and the like in order to combust particulate matters accumulated in a diesel particulate filter (a DPF) having an oxi...
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JP4175281B2 |
A method and system providing a vehicle condition detection means (38C) for detecting the stopped and traveling state of a vehicle, and when the vehicle condition detection means (38C) detects that the vehicle has stopped during operatio...
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JP4175022B2 |
A diesel particulate filter 14 that traps particulate matters In an exhaust gas and a NOx trap catalyst 13 that traps NOx in the exhaust gas are disposed in art exhaust passage (10) in an internal combustion engine (1). When a regenerati...
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JP4174767B2 |
An exhaust gas purification system including a catching reactor for attracting particulate matters in an exhaust gas from an engine by electrostatic force, a main exhaust path and an auxiliary exhaust path provided on the exit side of th...
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JP4170935B2 |
An exhaust purifying apparatus estimates an accumulation amount of particulate matter trapped about a catalyst in an exhaust system. When the estimated accumulation amount is equal to or more than a permissible value, the apparatus execu...
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JP4161932B2 |
When a forced regeneration is restarted after interrupting the forced regeneration, and in at least any one of cases where the collecting quantity area (Rpj) detected by the collecting quantity area detection means (32C) is in another co...
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JP4163926B2 |
To prevent the white fuming of an exhaust gas before happening in starting the traveling after an idling state is continued for a long time, with respect to a vehicle comprising a catalyst regeneration type particulate filter in the midd...
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